Machine for molding concrete or like substances



J. F. BURN AND F. W. TURNER.

MACHINE FOR MOLDING CONCRETE 0R LIKE SUBSTANCES.

APPLICATION HLED JAN. 20, 1915- 1,334,928. Patented Ma1-.23,1920.

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APPLICATION FILED JAN-20,1915- Patented Mar. 3, 1920.

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UNITED STATES PATENT OFFICE.

men FAULDER BURN, o N w srLE-um rma are are WET'HEBELL TU ER. 1? WEST HAMLEB QL. G ND e w r us WIN T LIM ED. F NDO ENGLAND.

MACHINE FOR MQLDIN'G CONCRETE OR LIKE SUBSTANCES.

Application filed January 20, 1915.

To all l-(iZ-OHt 2'25 may concern:

Be it known that we, JO N Fnononn BURN, of Star Buildings, Northumberland street, NGWCELStIG-UPOIIvTYIIQ, in the county of Northumberland, England, and FRED TETHERELL TURNER, of 8 Fountain Terrace, Vest Hartlepool, in the county of Durham, England, have invented certain new and useful Improvements in or Relating to Machines for Molding Concrete or like Substances, of which the following is a specification.

This invention relates to machines for molding concrete or like substances, in the present description, of which reference will be made to the accompanying drawings in which Figure 1 is a transverse sectional view of the mold box set up to make three slabs at one operation, and showing pallet and division plates in place.

Fig. 2 is an end elevation of the machine, showing the side walls of the mold box open.

Fig. 3 is a plan of the same, partly in horizontal section, and with the mold box closed.

Fig. 1 is a detail vertical sectional view of the machine.

Fig. 5 is an end elevation of the same, showing the mold box in vertical position, ready for being filled.

Fig. 6 is a transverse sectional view of the same, omitting the rear end standard, and showing the mold box tilted and projected forward ready to receive the facing material of the block to be molded.

Fig. 7 is a detail longitudinal section through the mold box, showing a shouldered core and a core-hole stopper in conjunction with the pallet.

The same reference numerals in the respective figures denote the same or corresponding parts.

For the purpose of making several blocks at one time in the mold box, with molded or interlocking edges, division plates are provided, one or more transversely and one or more longitudinally.

The mold box is composed of back and front walls 1 hinged by hinge pins 1*- to cheeks 2 formed upon side bars 2 and end walls 3 hinged by hinge pins 3 to cheeks fer-s ed r nse d. ars both 2 and Specification of Letters Patent.

Patented Mar. 23, 1920.

Serial No. 3,409

2 resting upon suitable brackets 23, the said end walls being grooved as at 4: for the reception of division plates 5 and molded to the form the molded edge of slab. is to take,

The division plates 5 are secured by suitable means to the fixed bed-plate 6 of the machine.

The bottom of the mold box is furnished with a loose pallet 7 having molded recesses 8 of the shape that the molded edge of the slab is to take and slots for the division plates 5. to pass through.

The pallet 7 is removable and is intended to be lifted away at the completion of each operation with the partially set slabs standing therein, a fresh pallet being required for each set of slabs made.

After the slabs have become snfiiciently set, the pallet may be re-used.

A former 9 is used to form the molded upperedge of the slabs; it is provided with downward flanges 10 at the sides to keep it in position and projections 11 on its underside to form. the recesses in the slabs and projections 12 and recesses 13 to insure the recess on the top edge of the slabs being formed the full length of such slabs.

The handle 1 1 is used to draw the former along the top of the mold. box while at the same time it is being beaten into position by a mallet or the like struck upon a block of wood 15 inserted into the former 9 to receive the blows.

(Tor es 16 are mounted in an upright position on the bed-plate 6 between the division plates 5. The pallet 7 is also provided with holes to enable it to be lowered down with the mold box, causing the cores 16 to appear to rise up within the latter.

The cores 16 may be of any shape preferably tapered adapted to be withdrawn out of the material forming the block. The length of the cores will depend upon the desired depth of the recesses which they form. They may be of any suitable number.

The cores 16 may also be shouldered lower down as at 16 (Fig. 7) so as to do away with the necessity of using pallets having diflerent sized holes in same, the lower part of the core 16 being of such a shape and size as will close a uniform size of hole (which may be rectangular (as shown) moral or t er shape} in the p l plate 6 and are of such ashape and size as will close the holes in the pallet 7 while their height is such as to be flush with the upper surface of the pallet 7.

The use of cores shortened in'height, shouldered at the top, or shouldered at the level of the pallet, also core-hole stoppers as above described, may be applied in a similar manner to molding machines wherein the cores are withdrawable horizontally. The mam structure of the machine,

namely that portion comprising the end lates 18, longitudinal bars 19, tie 20 and lied-plate 6, is of the nature of a cradle, supported by trunnions 21 upon standards 22 so as to. be capable of swinging into the position shown in Fig. 6.

.The mold box, composed of hinged back and, front walls 1, end'walls 3 and pallet 7 is adapted to rise and fall within this structure or cradle, leaving the cores 16 (see Fig. '6) relatively stationary upon the bedplate 6 to which they are fixed.

This rising action is performed by pulling over a lever 36, which, is capable of being swung independently of the structure 18, 19, 20, when desired, and accordingly carries a boss 28 rigidly mounted uponthe end, of a longitudinal shaft 30 j ournaled in hearings in the two end plates 18 said shaft 30 having a radial arm- 37 bearing a counter weight 38. There is a toothed quadrant 39 fast upon the endplate 18, and a pawl 40 on the lever 36 is adapted to spring into engagement with said quadrant and can be withdrawn by a connecting rod 41 fastened to afinger lever 42 pii oted on lever 36, when it is desired to lower the mold box again. The engagement of the pawl 40 in the quadrant 39 holds the mold box in its elevated position.

The mold box is raised and lowered by means of'a roller 37 fastened by a pin to the sleeve-23 such roller occupying the slot ofa radial forked lever 29, which forms an integral'part of lever 36, a similar fork lever, 29 being-provided at the other end of the shaft-30 acting upon a similar roller 37 at that end. The action of pulling over the lever '36, and simultaneously gripping the jcfinger lever 12 to withdraw the pawl 40, causes the forked lever 29 to lift the adjacent bracket; 23, thereby raising the mold box., The 'four walls'1, 1, 3, 3 of the mold box are hinged 'as already'mentioned to the bars 2"and 2 which form an open frame carry- -ing the pallet 7 freely upon it, such pallet being suitably perforated as above described, so as to pass easily over or around the cores 16 when the frame made up of 2 and 2 is raised or lowered. The bracket 23one at each end of the machinewhich supports the frame made up of 2 and 2 is supplied with a vertical portion -23 (conveniently in the form 0 a sleeve) adapted to ride up and down or along a guide rod 24: and rest (when in its lowest position) upon a nut 25 screwed upon the lower end of the latter which is threaded, and the distance through which the frame 2, 2 and the mold box 1, 3 can travel or descend (while the cores 16 remain stationary) can be adjusted by turning the nut 25 which is also provided with a set screw 26 or other locking means. In this way the height of the cores 16 may be adjusted so that their tops come exactly level with the top of the lowered mold box in cases where it is desired that the blocks shall have complete perforations.

For preventing the structure and mold the end standard 22. When the structure and mold have been swung into a tilted position, they can be locked by the same bolt 27 1entering a hole 32, in the same end-standarc.

The bolt 27 is pressed outward by a spring 33 and drawn inward by a pull-back chain 33 attached to a rod 34 connected at its upper end to a pivoted handle 35 secured to the main lever 36. When said handle 35 is pressed against said lever 36, the spring bolt 27 becomes withdrawn from its hole, thus allowing the structure with the mold box to be tilted or swung and held locked in position as long as desired. The lever 36 can be used both for tilting or swinging the frame and mold box as well as for raising and lowering (and incidentally opening and closing) the mold box.

When used for tilting or swinging the structure upon its trunnions 21, the lever 36 must be locked rigidly to the end-plate 18, which is done by the aid of a return tooth 410 on the pawl 10 which hooks behind the extremity of the quadrant 39. This prevents the lever 36 from swinging in relation to the end-plate 18, swinging in the opposite direction being also impossible, owing to the end of the forked lever 29 coming to a stop against the roller 37. Thus this lever 36, with its handles 35 and 42, provides for single lever control, that is to say, it can be used equally well either for raising or lowering the mold boxor for swinging the same upon the trunnions.

' The sides 1 and ends 3 of the mold box tall outwardly by themselves when raised, their hinges being situated nearer to the center of the mold box than their centers of gravity, but they constantly bear against rollers l3 suitably mounted on the side bars 19 and tops of end plates 18, said rollers holding said sides and ends in closed vertical position when the latter have completed their descent.

What we claim as our invention and desire to secure by Letters Patent is 1. In a machine for forming blocks, a bed plate fixed between end stancards, division platesmounted on said bed-plate, a mold box capable of rising and falling, the two end walls otwhich are grooved to receive the edges of the said division plates, a frame to which all four walls of the inold box are hinged, a single plate, including a .locked positions by entering one or other of two suitable holes in the end standard, substantially as described.

2. In a machine of the kind specified, means for forming channeled or interlocking or interengaging blocks, consisting of a bed plate fixed between end standards, division plates mounted on said bed-plate, a mold box capable of rising and falling, the two end walls of which are grooved to receive the edges of the said division plates, one wall being also ribbed and the other channeled, a frame to which all four walls of the mold box are hinged, a single plate including a series of pallets with slots therein for affording passage to the said division plates and shaped to fit the ribs, means for "aising and lowering the mold box and means for tilting the same into an inclined position, means for locking the mold box in both its vertical and its inclined positions, such means comprising a pivoted handle and a slidable rod secured to the main lever, together with a spring-impelled bolt connected to said rod, such bolt being adapted to spring into either of the required locked positions by entering one or other of two suitable holes in the end standard, substantially as described.

3. In a machine for forming blocks, a bed plate fixed between end standards, clivision plates nounted on said bed-plate, a series of cores mounted upon said bed-plate between the division plates, a mold box capable of rising and falling, the two end walls of which are grooved to receive the edges of the said division plates, a frame to which all four walls of the mold box are hinged, a sin le plate, including a series of pallets with sIots therein for affording pass age to the said division plates, and perforated with holes adapted to be penetrated by said cores, means for raising and lowering said mold box and means for tilting the same into an inclined position, means for locking the mold box in both its vertical and its inclined positions, such means comprising a pivoted handle and a sliclable rod secured to the main lever, together with a springimpelled bolt connected to said rod, such bolt being adapted to spring into either of the required locked positions by entering one or other of two suitable holes in the end standard, substantially as described.

i. In a machine of thekind specified, means for forming channeled or interlocking or interengaging blocks, consisting of a bed plate fixed between end standards, division plates mounted on said bed-plate, a series of cores mounted upon the bed-plate between the division-plates, a mold box capable of rising and falling, the two end walls of which are grooved to receive the edges of the said division plates, one wall being also ribbed and the other channeled, a frame to which all four walls of the mold box are hinged, a single plate, including a series of pallets with slots therein, for affording passage to the said division plates and shaped to fit the ribs, and perforated with holes adapted to be penetrated by said cores, means for raising and lowering the mold box and means for tilting the same into an inclined position, means for locking the mold box in both its vertical and its inclined positions, such means comprising a pivoted handle and a slidable rod secured to the main lever, together with a spring impelled bolt connected to said rod, such bolt being adapted to spring into either of the required locked positions by entering one or other of two suitable holes in the end standard, substantially as described.

5. In a machine of the kind specified. for

forming blocks, a bed plate fixed between end standards, division-plates mounted on said bed-plate, a mold box capable of rising and falling, the two end walls of which are grooved to receive the edges of the said clivisioirplates, a frame to which all four walls of the mold box are hinged, a single plate, including a series of pallets with slots therein for affording passage to the said division-plates and perforated with holes of a uniform size, a series of cores mounted upon the bed-plate between the division-plates and having shoulders of the same uniform size as the holes in said pallet, said cores being in other respects of any desired dimensions in order to. enable any one pallet to serve for cores of diflerent dimensions, means "for raising and lowering the mold box and means for tilting the same into an inclined position, means for locking themold box in both its vertical and its inclined positions, such means comprisin a pivoted handle and a slidable rod securec to the :ma'in lever, together witha springimpelled bolt connected to said rod, such bolt being adapted to spring into either of the required locked ositions by entering one or other oftwo sultable holes in the end standard, substantially as described.

6. In a machine of the kind specified for forming blocks, a bed plate fixed between end standards, division-plates mounted on said bedeplate, a mold box capable of rising and falling, the two end Walls of which are grooved to receive the edges of the said division-plates, a frame to which all four walls of the mold box are hinged, a single plate, includin a seri es of pallets with slots r therein fora ording passage to the said division-plates and perforated with holes of a uniform size, core stoppers to obviate the necessity of using an unperforated or special pallet in those cases where no core is present, means for raising and lowering said mold box and means for tilting the same into an inclined position, means for locking the mold box in both its vertical and its inclined positions, such means compris ing a pivoted handle and a slidable rod secured to the main lever, together with a spring-impelled bolt connected to said rod, such bolt being adapted to spring into either of the required locked positions, by entering one or other of two suitable holes in the end standard, substantially as described.

Signed at Newcastle-upon-Tyne, this 18th day of November, 1914:.

JOHN FAULDER BURN.

FRED VETHERELL TURNER.

In the presence of' W. H. VALKER, WALTER DENTON. 

